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# DMPlexPointGlobalRead
return read access to a point in global array
## Synopsis
```
#include "petscdmplex.h"
PetscErrorCode DMPlexPointGlobalRead(DM dm, PetscInt point, const PetscScalar *array, const void *ptr)
```
Not Collective
## Input Parameters
- ***dm -*** `DM` defining topological space
- ***point -*** topological point
- ***array -*** array to index into
## Output Parameter
- ***ptr -*** address of read reference to point data, type generic so user can place in structure; returns NULL if global point is not owned
## Note
## A common usage when data sizes are known statically
```none
const struct { PetscScalar foo,bar,baz; } *ptr;
DMPlexPointGlobalRead(dm,point,array,&ptr);
x = 2*ptr->foo + 3*ptr->bar + 5*ptr->baz;
```
## See Also
[](ch_unstructured), `DM`, `DMPLEX`, `DMGetLocalSection()`, `PetscSectionGetOffset()`, `PetscSectionGetDof()`, `DMPlexGetPointGlobal()`, `DMPlexPointLocalRead()`, `DMPlexPointGlobalRef()`
## Level
intermediate
## Location
src/dm/impls/plex/plexpoint.c
## Examples
src/ts/tutorials/ex11.c
src/ts/tutorials/ex11_sa.c
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/impls/plex/plexpoint.c)
[Index of all DMPlex routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)